Impact of alkaline metal ions Mg2+, Ca2+, Sr2+ and Ba2+ on the structural, optical, thermal and antibacterial properties of ZnO nanoparticles prepared by the co-precipitation method

Hameed, A.S. Haja; Karthikeyan, Chandrasekaran; Sasikumar, Seemaisamy; Kumar, Venugopal Senthil; Kumaresan, S.; Ravi, G.

doi:10.1039/c3tb21068e

Cited by 213 publications

(100 citation statements)

References 50 publications

(46 reference statements)

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“…There are several methods reported in the literature for the synthesis of undoped, doped ZnO NPs and its derivatives which can be categorized into either (Chemical or Physical, co-precipitation, hydrothermal, solvothermal, emulsion and microemulsion methods etc.) [10][11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28]. Among the various methods, co-precipitation is one of the most important methods to prepare the nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, structural and optical properties of pure ZnO and Co doped ZnO nanoparticles prepared by the co-precipitation method

Devi¹,

Velu²

2016

J Theor Appl Phys

118

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Pure ZnO and Cobalt (Co) doped ZnO nanoparticles (NPs) were synthesized by the co-precipitation method. The synthesized nanoparticles retained the wurtzite hexagonal structure, which was confirmed by X-ray diffraction studies. From FESEM studies, ZnO and Co doped ZnO NPs showed Spherical and nanorod mixed phase and Spherical like morphology, respectively. The amount of dopant (Co 2? ) incorporated into ZnO sample was determined by EDAX. The FT-IR spectra confirmed the Zn-O stretching bands at 438 and 427 cm -1 for ZnO and Co doped ZnO NPs. From the UV-VIS spectroscopic measurements, the excitonic pecks were found around 376 and 370 nm for the respective samples. The photoluminescence measurements revealed that the broad emission was composed of seven different bands due to zinc vacancies, oxygen vacancies and surface defects. The dynamic light scattering (DLS) and Zeta potential measurements were used to find out the size and surface charges.

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Section: Introductionmentioning

confidence: 99%

Synthesis, structural and optical properties of pure ZnO and Co doped ZnO nanoparticles prepared by the co-precipitation method

Devi¹,

Velu²

2016

J Theor Appl Phys

118

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“…Higher surface area due to smaller crystal size results in greater antibacterial activity. 35 The antibacterial activity of CeO 2 NPs primarily depends upon the electrostatic attraction between positively charged NPs and negatively charged bacterial cell surface and is crucial for the activity of NPs as a bactericidal agent. The interaction is also responsible for reactive oxygen species (ROS) generation, which ultimately leads to bactericidal effect.…”

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confidence: 99%

Antimicrobial potential of green synthesized CeO<sub>2</sub> nanoparticles from <em>Olea europaea</em> leaf extract

Maqbool

Nazar

Naz

et al. 2016

IJN

149

101

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This article reports the green fabrication of cerium oxide nanoparticles (CeO 2 NPs) using Olea europaea leaf extract and their applications as effective antimicrobial agents. O. europaea leaf extract functions as a chelating agent for reduction of cerium nitrate. The resulting CeO 2 NPs exhibit pure single-face cubic structure, which is examined by X-ray diffraction, with a uniform spherical shape and a mean size 24 nm observed through scanning electron microscopy and transmission electron microscopy. Ultraviolet-visible spectroscopy confirms the characteristic absorption peak of CeO 2 NPs at 315 nm. Fourier transform infrared spectroscopy reflects stretching frequencies at 459 cm −1 , showing utilization of natural components for the production of NPs. Thermal gravimetric analysis predicts the successful capping of CeO 2 NPs by bioactive molecules present in the plant extract. The antimicrobial studies show significant zone of inhibition against bacterial and fungal strains. The higher activities shown by the green synthesized NPs than the plant extract lead to the conclusion that they can be effectively used in biomedical application. Furthermore, reduction of cerium salt by plant extract will reduce environmental impact over chemical synthesis.

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“…[29]. The asymmetric C-H stretching occurs at 2923 cm -1 for Cu doped ZnO and 2951 cm -1 for Fe doped ZnO NPs [24]. The symmetric and asymmetric stretching vibration of C=O are observed at 1434, 1441, 1543 and 1557 cm -1 [30] for Cu and Fe doped ZnO NPs respectively.…”

Section: Ft-ir Spectroscopic Studiesmentioning

confidence: 98%

Structural, optical and photoluminescence properties of copper and iron doped nanoparticles prepared by co-precipitation method

Devi¹,

Velu²

2016

J Mater Sci: Mater Electron

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Copper (Cu) and iron (Fe) doped zinc oxide (ZnO) nanoparticles (NPs) were synthesized by co-precipitation method. The average crystallite sizes of the synthesized NPs were found to be 28 and 30 nm for Cu and Fe doped ZnO NPs respectively. From FESEM images, Cu and Fe doped ZnO NPs showed that the spherical structure morphology. The amount of dopant (Cu 2? and Fe 3? ) ions incorporated with ZnO NPs was determined by EDAX. FT-IR spectra confirmed the presence of Zn-O stretching bands at 438, 416 and 431 cm -1 in the respective ZnO NPs. Optical absorption spectra revealed the estimated band gap was found to increase for Cu and Fe doped ZnO NPs as compared to the pure ZnO NPs. The photoluminescence measurements revealed the broad emissions were composed seven different bands due to zinc vacancies, oxygen vacancies and surface defects.

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Impact of alkaline metal ions Mg2+, Ca2+, Sr2+ and Ba2+ on the structural, optical, thermal and antibacterial properties of ZnO nanoparticles prepared by the co-precipitation method

Cited by 213 publications

References 50 publications

Synthesis, structural and optical properties of pure ZnO and Co doped ZnO nanoparticles prepared by the co-precipitation method

Synthesis, structural and optical properties of pure ZnO and Co doped ZnO nanoparticles prepared by the co-precipitation method

Antimicrobial potential of green synthesized CeO<sub>2</sub> nanoparticles from <em>Olea europaea</em> leaf extract

Structural, optical and photoluminescence properties of copper and iron doped nanoparticles prepared by co-precipitation method

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